#include <stdio.h>
int main(void){
	int year;
	printf("请输入你的年份：\n");
	scanf("%d",&year);
	if(year % 4 == 0 && year % 100 !=0 ||year % 400 ==0){
		printf("%d是闰年\n",year);
	}
	else{
		printf("%d不是闰年！\n",year);
	}
}
